CN215318149U

CN215318149U - Clamping tool for flat plate with circular holes

Info

Publication number: CN215318149U
Application number: CN202120031838.2U
Authority: CN
Inventors: 徐寅
Original assignee: Chery Automobile Co Ltd
Current assignee: Chery Automobile Co Ltd
Priority date: 2021-01-07
Filing date: 2021-01-07
Publication date: 2021-12-28
Anticipated expiration: 2031-01-07

Abstract

The utility model aims to provide a clamping tool for a flat plate with a round hole, which is firm in clamping and high in universality, and comprises at least three levers, wherein one end of each lever is rotatably connected with a connecting plate, the end part of the other end of each lever is provided with an outward-expanding clamping jaw, a supporting mechanism is clamped in the middle section of each lever, and the supporting mechanism moves in the direction vertical to the plate surface of the connecting plate to adjust the opening degree of each clamping jaw and then is locked. In the scheme, the lever principle is utilized, the fulcrum moves to adjust the distance between the levers, so that the lever is suitable for round holes with different diameters, the purpose of fixing the flat plate piece is achieved, the clamping stability is good, and the universality is high.

Description

Clamping tool for flat plate with circular holes

Technical Field

The utility model relates to the technical field of mechanical aids, in particular to a clamping tool for a flat plate with a circular hole.

Background

At present, the tool fixing of flat plate objects with round holes mainly comprises fixing a flat plate by a conical positioning pin and a pressing type buckle. Conical locating pin needs to match according to the dull and stereotyped round hole diameter of difference, can't match according to the thickness of flat plate in single round hole rigidity three direction degree of freedom (vertically, transversely, vertical) moreover, the push type buckle needs to match according to the flat plate, and these two kinds of traditional frocks have the usage single, fixed not firm scheduling problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a clamping tool for a flat plate with a round hole, which is firm in clamping and high in universality.

In order to achieve the purpose, the utility model adopts the technical scheme that: the utility model provides a centre gripping frock for taking round hole flat-plate member, includes three piece at least levers, and the one end of lever is rotated with the connecting plate and is connected, and the tip of the other end is provided with the jack catch that expands outward, and the middle section clamp of a plurality of levers has put supporting mechanism, and supporting mechanism moves in the perpendicular to connecting plate face direction and locks after adjusting the degree of opening and shutting size of jack catch.

In the scheme, the lever principle is utilized, the fulcrum moves to adjust the distance between the levers, so that the lever is suitable for round holes with different diameters, the purpose of fixing the flat plate piece is achieved, the clamping stability is good, and the universality is high.

Drawings

Fig. 1 is a perspective view of a clamping tool.

Detailed Description

As shown in fig. 1, a clamping tool for a flat plate with a circular hole comprises at least three levers 10, one end of each lever 10 is rotatably connected with a connecting plate 20, a jaw 11 which is expanded outwards is arranged at the end of the other end of each lever 10, and a supporting mechanism is clamped in the middle of each lever 10 and moves in the direction perpendicular to the plate surface of the connecting plate 20 to adjust the opening degree of the jaw 11 and then is locked. By utilizing the lever principle, the distance between the levers 10 is adjusted by moving the fulcrum, so that the device is suitable for round holes with different diameters, thereby achieving the purpose of fixing the flat plate piece, and has good clamping stability and strong universality.

As a preferred embodiment of the present invention, the supporting mechanism includes a round ball 31 clamped at the middle section of the plurality of levers 10, a long stud 32 is fixed on the round ball 31, the long stud 32 is inserted into a threaded hole formed on the connecting plate 20 to form a threaded connection, and the position of the long stud 32 in the threaded hole is rotated to adjust the opening and closing degree of the clamping jaws 11. The round ball 31 is driven to move in the direction perpendicular to the surface of the connecting plate 20 by adjusting the long stud 32, and the round ball 31 is selected as a support, so that the lever 10 can be smoothly unfolded when the long stud 32 is screwed to rotate.

The middle section of the lever 10 is bent outward to form a curved portion 12, the curvature of the curved portion 12 is equal to that of the spherical ball 31, and the plurality of curved portions 12 are wrapped around the spherical ball 31. When the curved portion 12 is just wrapped outside the round ball 31, the length direction of the lever 10 is perpendicular to the plate surface of the connecting plate 20 or forms a small-angle included angle, the size of the circle formed by enclosing the clamping jaws 11 positioned at the end portion is the minimum, the clamping jaws can be easily inserted into the round hole of the flat plate, then the long stud 32 is screwed to drive the round ball 31 to move towards the direction close to the connecting plate 20, the contact fulcrum of the round ball 31 on the lever 10 is changed, and each clamping jaw 11 expands outwards and tightly supports the inner wall of the round hole to clamp and fix the flat plate. After the clamping operation is finished, the long stud 32 is screwed to drive the round ball 31 to move in the direction away from the connecting plate 20 until the curved portion 12 is just wrapped on the outer portion of the round ball 31, and the clamping jaws are easily pulled out of the round holes.

In order to prevent the levers 10 from shaking when the device is not in use, a tension spring 40 is arranged between the adjacent levers 10 between the curved part 12 of the round ball 31 and the clamping jaws 11, and the tension spring 40 provides tension to drive the levers 10 to be mutually folded. The folded device occupies small area and is convenient to store.

Example 1

One end of the lever 10, which is far away from the claw 11, is provided with a hook 13 protruding outwards, the hook 13 penetrates through a through hole formed in the connecting plate 20 and then is clamped on the plate surface, and the hook 13 can rotate around the through hole and cannot be disengaged from the through hole.

Example 2

The end of the lever 10 far away from the claw 11 is hinged with the connecting plate 20 through a hinge shaft, and the shaft core of each hinge shaft is parallel to the plane of the connecting plate 20.

Further, the connecting plate 20 is in a circular truncated cone shape, the levers 10 are uniformly distributed in the circumferential direction of the connecting plate 20, and the axes of the cones formed by surrounding the levers 10 are collinear with the axis of the long stud 32, so that the levers 10 are synchronously opened and closed, and the stability and reliability of the claw 11 for opening the circular hole are ensured.

Further, the length direction of the jaw 11 is arranged at an obtuse angle to the length direction of the lever 10.

Claims

1. The utility model provides a centre gripping frock for taking round hole flat plate spare which characterized in that: the locking mechanism comprises at least three levers (10), one ends of the levers (10) are rotatably connected with a connecting plate (20), the end parts of the other ends of the levers are provided with outward-expanding clamping jaws (11), a supporting mechanism is clamped in the middle sections of the levers (10), and the supporting mechanism moves in the direction perpendicular to the plate surface of the connecting plate (20) to adjust the opening and closing degree of the clamping jaws (11) and then is locked.

2. The clamping tool for the flat plate with the circular hole as claimed in claim 1, wherein the clamping tool comprises: the supporting mechanism comprises a round ball (31) clamped in the middle section of the plurality of levers (10), a long stud (32) is fixed on the round ball (31), the long stud (32) is inserted into a threaded hole formed in the connecting plate (20) to form threaded connection, and the position of the long stud (32) in the threaded hole is rotated to adjust the opening and closing degree of the clamping jaw (11).

3. The clamping tool for the flat plate with the round hole as claimed in claim 2, wherein the clamping tool comprises: the middle section of the lever (10) is bent outwards to form a bent arc part (12), the curvature of the bent arc part (12) is equal to that of the round ball (31), and the plurality of bent arc parts (12) are wrapped on the periphery of the round ball (31).

4. The clamping tool for the flat plate piece with the circular hole as claimed in claim 3, wherein the clamping tool comprises: and a tension spring (40) is arranged between the adjacent levers (10) between the curved part (12) and the clamping jaw (11), and the tension spring (40) provides tension to drive the levers (10) to be mutually folded.

5. The clamping tool for the flat plate with the circular hole as claimed in claim 1, wherein the clamping tool comprises: one end of the lever (10) far away from the clamping jaw (11) is provided with a clamping hook (13) protruding outwards, and the clamping hook (13) penetrates through a through hole formed in the connecting plate (20) and then is clamped on the plate surface.

6. The clamping tool for the flat plate with the circular hole as claimed in claim 1, wherein the clamping tool comprises: one end of the lever (10) far away from the clamping jaws (11) is hinged with the connecting plate (20) through hinge shafts, and the shaft core of each hinge shaft is parallel to the plane where the connecting plate (20) is located.

7. The clamping tool for the flat plate member with the circular hole as claimed in claim 5 or 6, wherein the clamping tool comprises: the connecting plate (20) is in a circular truncated cone shape, the levers (10) are uniformly distributed in the circumferential direction of the connecting plate (20), and the shaft core of the cone formed by enclosing the levers (10) is collinear with the shaft core of the long stud (32).

8. The clamping tool for the flat plate with the circular hole as claimed in claim 1, wherein the clamping tool comprises: the length direction of the clamping jaw (11) and the length direction of the lever (10) form an obtuse angle.